Java Enumeration

 ENUMERATION:

• enum is the keyword.
• This datatype contains fixed set of constants
• enum is a special class we can give a name to just like other classes, but the variable will be constant.

We can use it in switch and also in enhanced for loop.

For(classname obj: classname.values())

System.out.println(“obj”); 

Example 01:

package Methods;

public class EnumExample {

// Define an enum for days of the week

enum Day {

SUNDAY, MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY

}

public static void main(String[] args) {

// Using an enum variable

Day today = Day.SATURDAY;

System.out.println("Today is " + today);

// Switch statement with enum

switch (today) {

case MONDAY:

System.out.println("It's a workday.");

break;

case SATURDAY:

case SUNDAY:

System.out.println("It's the weekend.");

break;

default:

System.out.println("It's a weekday.");

}

// Iterating through all days using values() method

Day[] days = Day.values();

System.out.println("Days of the week:");

for (Day day : days) {

System.out.println(day);

}

}

}